Free point

Free point is a common method known in the oil field practice which involves deploying a wireline to estimate the depth at which the drill string can get un-stuck during drilling.

Free Point Tools are designed to measure torque and stretch in tubing, casings, and drill pipes and to provide accurate free pipe indication. The highest point at which the drill pipe is "free" or not stuck. The pipe is then separated and all the pipe that is not stuck is laid down. Fishing tools are then used to attempt to retrieve the stuck pipe.